// Copyright 2025 OPPO.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use crate::error::ErrorExt;

// Extended Result type, which requires support for setting the wrong context.
pub trait ResultExt<T, E>: Sized
where
    E: ErrorExt,
{
    fn ctx(self, ctx: impl Into<String>) -> Result<T, E>;
}

impl<T, E> ResultExt<T, E> for Result<T, E>
where
    E: ErrorExt,
{
    // Append 1 wrong context information.
    fn ctx(self, ctx: impl Into<String>) -> Result<T, E> {
        match self {
            Err(e) => Err(e.ctx(ctx)),
            _ => self,
        }
    }
}
